Stanton was a late scratch from the lineup Friday night and didn't play Saturday. An MRI exam revealed no structural damage.

Stanton believes he suffered the injury when trying to make a diving catch last weekend.

"I wasn't too sure if it was the weather or the dive or what not," Stanton told the newspaper. "I felt it (during batting practice Friday) and I didn't like it."

Widely regarded as the game’s premier young power hitter, the 23-year-old Stanton is off to a slow start this season. In his first nine games, he is hitting just .167/.342/.233 with just two extra-base hits (both doubles) and no RBIs.

Stanton was limited to just 123 games last season after having knee surgery, though he still hit .290/.361/.608 with 37 homers and 86 RBIs.